Process for improving dimensional stability of video disc caddy
US4426349A · kind A · utility
1Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1982 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Apr 8, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C71/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video disc caddies are treated to maintain dimensional stability by heating them while preventing either inward or outward bowing of the caddy halves for a time sufficient to stress-relieve the plastic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.